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Convert US Fluid Ounces to Imperial Fluid Ounces

1 us fluid ounce = 1.0408427 imperial fluid ounces. Multiply the number of us fluid ounces by 1.04084273079.

Result
1.040842731

1 fl oz = 1.040842731 fl oz

Multiply the number of us fluid ounces by 1.04084273079.

Results are rounded for display. Double-check values for critical work.

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US Fluid Ounces to Imperial Fluid Ounces table

US Fluid OuncesImperial Fluid Ounces
1 fl oz1.0408427 fl oz
2 fl oz2.0816855 fl oz
3 fl oz3.1225282 fl oz
4 fl oz4.1633709 fl oz
5 fl oz5.2042137 fl oz
10 fl oz10.408427 fl oz
20 fl oz20.816855 fl oz
25 fl oz26.021068 fl oz
50 fl oz52.042137 fl oz
100 fl oz104.08427 fl oz
500 fl oz520.42137 fl oz
1000 fl oz1,040.8427 fl oz

About these units

The us fluid ounce (fl oz) is a US customary unit of volume & capacity, equal to 0.00002957353 cubic meters.

The imperial fluid ounce (fl oz) is an imperial unit of volume & capacity, equal to 0.000028413063 cubic meters.

Going the other way, 1 imperial fluid ounce = 0.96075994 us fluid ounces. A US gallon and an imperial gallon differ by about 20%, and the same is true right down to teaspoons. This converter keeps the two systems separate and explicit so a recipe or a fuel figure never comes out a fifth wrong.

Frequently asked

How many imperial fluid ounces are in a us fluid ounce?
1 us fluid ounce = 1.0408427 imperial fluid ounces.
How do you convert us fluid ounces to imperial fluid ounces?
Multiply the number of us fluid ounces by 1.04084273079.
What is 10 fl oz in fl oz?
10 fl oz = 10.408427 fl oz.

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